Differential-gear structure



c. E. MILL-s.-v4 DIFFERENTIAL,G EA-RSTRUCTURE. 'APPLICATION FILED'TEB. 4,1920.

Patented Mar. 14, 1922.

- UNIT-ED,- STATLESPA-TENT@Oms-CE,

DiFrERENrIALeEARs'raaeronn; f Q f y Specification offL'etters Patent. Patented Mr, 14,1922.'

Application filed February 4, 1920. Serial N0. 356,180.

To @ZZ whom t may concern.'

Be it known that I, CLAUD E. MILLs, a

citizen of the United States, and a resident of Des Moines, in the countyl of Polk and State of Iowa, have invented a certain new and useful Differential-Gear Structure,of which the following is a specification.

The object of my invention is to provide a differential gear of novel structure, hav-g ing parts of simple construction, so made and arranged that they may be readily and easily assembled or taken apart for purposes of repair, replacement and storage.

' lVith these and other objects in viewV my invention consists in the construction, ar-

rangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claim, and illustrated in the accompanying drawings, in which:

Figure 1 shows avertical, sectional View bers, indicated by the reference characters 10 and 10a. Receivingthe axle members 10 and 10L respectively are sleeves or housing members 11 and 11a. Betweenthe respective sleeves and axle membersV are roller bearings 12. The sleevesand roller bearings, just described, terminate short of the inner ends of the axle members. Mounted upon the adjacent ends of the axle members 10 and 10- respectively are gear hubs 13 and 14, which form the hubs of spaced beveled gears 15 and 16.

The hubs or sleeves 13 and 14 are splied on the shaft members 10 and 10, Mounted on the sleeves 11 and 11a are the'journal members 17 andV 17El of a two-part differential gear casing 18. Mounted, on the inner ends of the hubs 13 and 14 between the gears 15 and 16 'are `bushings 19.

Mounted on the bushings 19 Ais a sleeve 20. Mounted in the sleeve'20 are the inner ends of a series of short shafts 21,,extend1ng' radially outwardly from the sleeve 20.

Mounted on the shafts 21 are beveled gears 22. .The sleeve 2O forms part of a disk or spider 23, in the outer portionrotwhich' are received the outer ends of the shafts 21.

The disk or spider 23, Vhasat its periphery an annular outwardly extending flange 24, which is bolted to a large pinion or bullv gear 25. 1

vIt will thus be seen the spider 23-with its sleeve portion 20 forms the inner part of the gear 25. Mounted on the outer ends of the sleeves 13 and '14 are bushings 26. Bolted to the outer portion of the spider 23v on opposite sides thereof are side brace members 27, the inner ends of which form bushings or bearings 28 journaled on theV members 15 and 18 and having oil holes 28a. The lgears 15 and 16 mesh with the gears 22. It will be seen that the construction of thediferential gear mechanism herein set forth is such as to give a iirin and A suflicientlyvlong bearingfor the sleeve members 20 and 28, whichserve as the hubof the gear 25, `which is thus journaled on the hubs 13 and 14C of the gears V15 and 16. It will'be seen that the two parts of the casing 19a may be separated, and thereafter the gearing structure may be readily and y easily disassembled-and reassembled for any desired purpose. After the casing members have been separated and'slid longitudinally on the sleeves 11 and 11a, the outer part of the gear 25 may be readily taken off by removing the bolts 29; thereafter by removing the bolts 30,"which extend through the outer portions of the members 27 and the spider 23, the brace members 27 may be removed. Thereafter the entire structure may be readily and easily taken apart. The parts of the structure which endure the most wear may be thus easily taken 0H Vand replaced.

Some ychanges may be made in the construction and arrangement of the various parts of my iimproved differential gear ysential purposes'V and featuresof'my invention, and itis my intention tov coverby my claim any modified forms of structure or use of mechanical equivalents which maybe reasonably included within their scope.

I claim' as my invention: I' y .In la differential gear structure, laligned shaft members, spaced bevelled lgears havi ing hubs fixed on the adjacentends thereof,

a sleeve onsaid hubs between said gears, an

annular member spaced from and surrounding said sleeve, radially arrangedtrunnions seated 1n said sleeve and said member, gears gear bolted to said flange', a'tWo-part"gear teasing.4 enclosing sadtmeeh-ansm, tsad second described hubs abutting against said first bevelled gear on one side and said eas- 10 ADes Moineglowa, :June 27, 1919.

I CLAUDE. MILLS. 

